Results 41 to 50 of about 332,715 (293)

Oscillation theorems for certain third order nonlinear delay dynamic equations on time scales

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2011
In this paper, we establish some new oscillation criteria for the third order nonlinear delay dynamic equations $$\left(b(t)\left([a(t)(x^\Delta(t))^{\alpha_1}]^\Delta\right)^{\alpha_2}\right)^\Delta+q(t)x^{\alpha_3}(\tau(t))=0$$ on a time scale $\mathbb{
Yibing Sun   +3 more
doaj   +1 more source

Oscillator death in coupled biochemical oscillators

open access: yesMathematics of Control, Signals, and Systems, 2023
Circadian rhythm, cell division and metabolic oscillations are rhythmic cellular behaviors that must be both robust but also to respond to changes in their environment. In this work, we study emergent behavior of coupled biochemical oscillators, modeled as repressilators.
Tomás Gedeon, Breschine Cummins
openaire   +3 more sources

Second-Order Damped Differential Equations with Superlinear Neutral Term: New Criteria for Oscillation

open access: yesAxioms
This paper focuses on establishing new criteria to guarantee the oscillation of solutions for second-order differential equations with a superlinear and a damping term.
Asma Al-Jaser   +3 more
doaj   +1 more source

Oscillation criteria for third order delay nonlinear differential equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2012
The purpose of this paper is to give oscillation criteria for the third order delay nonlinear differential equation \begin{equation*} \lbrack a_{2}(t)\{(a_{1}(t)(x^{\prime }(t))^{\alpha _{1}})^{\prime}\}^{\alpha _{2}}]^{\prime }+q(t)f(x(g(t)))=0, \end ...
E. Elabbasy   +2 more
doaj   +1 more source

Oscillation Modes in Multiresonant Oscillator Circuits [PDF]

open access: yesIEEE Transactions on Microwave Theory and Techniques, 2016
This work has been funded by the Spanish Government under contract TEC2014-60283-C3-1-R, the European Regional Development Fund (ERDF/FEDER) and the Parliament of Cantabria (12.JP02.64069).
Ramírez Terán, Franco Ariel   +2 more
openaire   +2 more sources

A pilot study of the impact of high-frequency chest wall oscillation in chronic obstructive pulmonary disease patients with mucus hypersecretion [PDF]

open access: yes, 2011
Indranil Chakravorty1, Kamaljit Chahal2, Gillian Austin21St George's Hospital, London, 2East and North Hertfordshire NHS Trust, Lister Hospital and Primary Care Trust, Stevenage, Hertfordshire, UKIntroduction: Chronic obstructive pulmonary ...
Chahal, K   +8 more
core   +1 more source

Small-Signal Input Impedance Modeling of PWM Induction Motor Drives and Interactive Stability Assessment with DC Link

open access: yesMachines
DC link power supply systems that integrate power electronic converters are increasingly being adopted. In particular, emerging “source–load” systems, in which the DC link interfaces with converters, have attracted increasing research interest due to ...
Dirui Yang   +5 more
doaj   +1 more source

Oscillation criteria for second order nonlinear neutral differential equations of mixed type

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2012
Some oscillation criteria are established for the second order nonlinear neutral differential equations of the form \begin{equation*} \left( \left( x(t)+a x(t-\tau_1)-b x(t+\tau_2)\right)^\alpha\right)''=q(t) x^\beta (t-\sigma_1)+p(t)x^\beta(t+\sigma_2)
Ethiraju Thandapani, Renu Rama
doaj   +1 more source

Coupled-Oscillators [PDF]

open access: yesInternational Astronomical Union Colloquium, 1993
AbstractModal coupling oscillation models for the stellar radial pulsation and coupled-oscillators are reviewed. Coupled-oscillators with the second-order and third-order terms seemed to behave non-systematically. Using the equation by Schwarzschild and Savedoff (1949) with the dissipation term of van del Pol’s type which is third-order, we demonstrate
openaire   +2 more sources

Comparison theorem for oscillation of fourth-order nonlinear retarded dynamic equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2013
This work is concerned with oscillation of a class of fourth-order nonlinear delay dynamic equations on a time scale. A new comparison theorem is established that improves related results reported in the literature.
Chenghui Zhang   +2 more
doaj   +1 more source

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